Physical Science Crossword.

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Across
  1. 1. force, The force that supports an object against gravity, often called the normal force.
  2. 4. energy, theorem The net work done on an object equals the change in kinetic energy of the object
  3. 7. rule The vector sum of forces acting on an; object that is not accelerating equals zero: ΣF = 0
  4. 11. energy, The energy that matter possesses due to its position.
  5. 12. The quantity of space an object occupies
  6. 13. speed, The speed that a projectile, space probe, or similar object must reach to escape the gravitational influence of Earth or of another celestial body to which it is attracted.
  7. 16. resistance, The force of friction acting on an object due: to its motion in air.
  8. 21. A simple machine consisting of a rigid rod pivoted at a fixed point called the fulcrum.
  9. 22. collision, A collision in which the colliding objects become distorted, generate heat, and may even stick together.
  10. 24. The speed of an object and specification of its direction of motion.
  11. 25. time, The time that one’s feet are off the ground during a vertical jump.
  12. 27. Inertia in motion, given by the product of the mass of an object and its velocity.
  13. 28. The property of a system that enables it to do work.
  14. 29. The quantity of matter in an object. More specifically, a measure of the inertia (or sluggishness) that an object
  15. 31. The rate at which velocity changes with time;the change in velocity may be in magnitude or direction or both, and it is usually measured in units of m/s2.
Down
  1. 2. of impulse and momentum, Impulse is equal to the change in the momentum of an object that the impulse acts on.
  2. 3. The product of the force and the distance moved by the force.
  3. 5. fall, Falling under the influence of gravity alone—falling without air resistance.
  4. 6. The force upon an object due to gravity. More specifically, the force with which a body presses against a supporting surface.
  5. 8. A device, such as a lever or pulley, that increases(or decreases) a force or simply changes the direction of a force
  6. 9. cell, A device that converts the chemical energy from a; fuel into electricity through a chemical reaction with oxygen or another oxidizing agent
  7. 10. The product of the force acting on an object; and the time during which; that force acts on that
  8. 12. quantity, A quantity whose description requires both magnitude and direction.
  9. 14. The curved path followed by a projectile under the influence of constant gravity only.
  10. 15. The unit of mass. One kilogram (kg) is the mass of 1 liter (L) of water at 4°C.
  11. 17. The property by which objects resist changes in motion.
  12. 18. The resistive force that opposes the motion or attempted motion of an object past another object with;which it is in contact, or through a fluid.
  13. 19. Simply stated, a push or a pull
  14. 20. force, The combination of all forces that act on an object.
  15. 23. The scientific unit of force
  16. 26. An arrow that represents the magnitude and direction of a quantity.
  17. 30. Distance traveled per unit time.